From a tiny pocket park dedicated to a pop star turned politician to the only female equestrian statue in the capital, Washington, D.C., is full of unique and obscure memorials. Beyond the National Mall, there are monuments to middling presidents, forgotten founders, failed projects, and allies turned enemies. Carolyn Muraskin, founder of DC Design Tours, takes a closer look at some of these odd and lesser-known monuments, memorials, and landmarks.